Our atmosphere has % Nitrogen, % Oxygen, and __% other gases like carbon dioxide, argon, and water vapour.

54, 40, 6

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78, 21, 1

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80, 12, 8

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21, 78, 1

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Solution

The correct option is B 78, 21, 1
The composition of the Earth's atmosphere is perfect for life to exist. It has 78% Nitrogen, 21% Oxygen, and 1% other gases like carbon dioxide, argon, and water vapour. The atmosphere has greenhouse gases like methane, carbon dioxide, and water vapour that trap the Sun’s heat and keep the Earth warm.

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Question 39
Why does the percentage of gases like oxygen, nitrogen and carbon dioxide remain almost the same in the atmosphere?

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